/*
 * Copyright (C) 2011 Nicola Bonzanni
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package nl.vu.few.ibivu.jlemon;

import nl.vu.few.ibivu.jlemon.concepts.Arc;
import nl.vu.few.ibivu.jlemon.concepts.Graph;
import nl.vu.few.ibivu.jlemon.concepts.Node;

public class ReverseDigraph<N extends Node & Comparable<N>, A extends Arc & Comparable<A>>
		extends DigraphForwarder<N, A, Graph<N,A>> {

	Graph<N, A> graph;
	
	public ReverseDigraph(Graph<N, A> graph) {
		super();
		this.graph = graph;
	}

	@Override
	protected Graph<N, A> delegate() {
		return graph;
	}

	@Override
	public N source(A arc) {
		return delegate().target(arc);
	}

	@Override
	public N target(A arc) {
		return delegate().source(arc);
	}

	@Override
	public A firstOut(N node) {
		return delegate().firstIn(node);
	}

	@Override
	public A nextOut(A arc) {
		return delegate().nextIn(arc);
	}

	@Override
	public A firstIn(N node) {
		return delegate().firstOut(node);
	}

	@Override
	public A nextIn(A arc) {
		return delegate().nextOut(arc);
	}
	
	

}
